Thompsontown, PA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Thompsontown, a borough in Juniata County, Pennsylvania.
Today
84°F
Patchy Fog then Sunny
Patchy fog before 9am. Sunny, with a high near 84. Northeast wind around 1 mph.
7-day forecast for Thompsontown
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 84°F | Patchy Fog then Sunny | 1 mph NE | 0% |
| Tonight | 64°F | Mostly Cloudy then Areas Of Fog | 1 mph E | 7% |
| Wednesday | 82°F | Areas Of Fog then Slight Chance Showers And Thunderstorms | 0 to 3 mph E | 25% |
| Wednesday Night | 68°F | Chance Showers And Thunderstorms then Patchy Fog | 1 mph E | 51% |
| Thursday | 88°F | Areas Of Fog then Showers And Thunderstorms Likely | 0 to 3 mph SW | 73% |
| Thursday Night | 69°F | Showers And Thunderstorms Likely then Chance Showers And Thunderstorms | 2 mph NW | 73% |
| Friday | 87°F | Showers And Thunderstorms Likely | 0 to 3 mph W | 69% |
| Friday Night | 68°F | Showers And Thunderstorms Likely then Chance Showers And Thunderstorms | 1 mph NW | 69% |
| Saturday | 85°F | Mostly Cloudy then Chance Showers And Thunderstorms | 0 to 5 mph W | 52% |
| Saturday Night | 67°F | Chance Showers And Thunderstorms | 2 mph W | 52% |
| Sunday | 87°F | Mostly Sunny | 3 mph W | 12% |
| Sunday Night | 69°F | Partly Cloudy | 3 mph SW | 12% |
| Monday | 88°F | Mostly Sunny then Slight Chance Showers And Thunderstorms | 1 to 7 mph W | 22% |
| Monday Night | 68°F | Slight Chance Showers And Thunderstorms | 2 to 6 mph W | 22% |
Forecast source: National Weather Service (api.weather.gov) for Thompsontown (40.566, -77.236). Updated through the day.
Growing snapshot for Thompsontown
Last spring frost
Apr 21
First fall frost
Oct 24
Growing season
185 days
Hardiness zone
6b
More local growing data for Thompsontown: nearby ZIP 17094 weather · frost dates · planting calendar · Pennsylvania frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Lewistown, Pa (18.2 mi from Thompsontown). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.